| 摘要 |
A digital power control device includes a power input terminal, power converter, regulator, power output terminal, feedback voltage detecting unit, feedback voltage encoder, PWM control unit, and a digital PWM output module 8. The feedback voltage encoder includes at least a resistor array, switch array, a resistor, a first comparator, and a second comparator. The feedback voltage encoder will provide a compare signal by processing the comparison between a feedback voltage detected by the feedback voltage detecting unit and a predetermined reference voltage. The PWM control unit will provide a control signal by processing the above compare signal. The digital PWM output module will control the DC converter to produce an analog pulse train with required duty cycle by the control signal of the PWM control unit so that the power output terminal can provide proper power to the electric equipment connected.
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